World War Two (ca. 1942) Numbered Conversion Unit
complete with original box, instructions and all
accessories. Listing of eight component parts (as opposed to
seven in post-war box) for the pre-war .22 Service Model
Conversion Unit printed inside box lid. Two tone magazine
with "Service Model" designation on the floorplate. This
unit was one of 65 units sold to the United States
Government and shipped December 17, 1942 to the
Depot Quartermaster, United States Marine Corps, 1100 S.
Broad Street, Philadelphia, Pennsylvania.

Standard ".22-.45 Service Model Conversion Unit (Floating
Chamber)" label on top of box.

Pre-war 1940s vintage standard end label.

"U" prefix number on the top of the slide just ahead of the
rear sight. This specific unit letters as having been
shipped to the United States Marine Corps (USMC) in 1941.

Complete set of pre-war components. Rampant Colt is present
on the left side of slide only (on pre-post war numbered
unit, Rampant Colt logo visible on both sides of slide).